How to track someone's location with just a phone number

How to track anyone's location WITHOUT their knowledge (why you should!)

True ID Caller App | Phone Number Location Live| How to find current Location of Any Mobile Number?

Phone Tracking location online using Gmail

find info on phone numbers with PhoneInfoga

Tracking a phone and reading their messages - this app should be illegal!

Is there a free app to spy on someones phone without touching it?

True ID Caller App- Identify every call and location | Block Unwanted Calls to Avoid Spammers